linux-kernel - [PATCH] resolve duplicate flag no for PG

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Message-ID: <20070514023718.GA14944@mail.ustc.edu.cn>
Date:	Mon, 14 May 2007 10:37:18 +0800
From:	Fengguang Wu <fengguang.wu@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] resolve duplicate flag no for PG_lazyfree

PG_lazyfree and PG_booked shares the same bit.

Either it is a bug that shall fixed by the following patch, or
the situation should be explicitly documented?

Signed-off-by: Fengguang Wu <wfg@...l.ustc.edu.cn>
---
 include/linux/page-flags.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2.6.21-mm2.orig/include/linux/page-flags.h
+++ linux-2.6.21-mm2/include/linux/page-flags.h
@@ -91,7 +91,7 @@
 #define PG_buddy		19	/* Page is free, on buddy lists */
 #define PG_booked		20	/* Has blocks reserved on-disk */
 
-#define PG_lazyfree		20	/* MADV_FREE potential throwaway */
+#define PG_lazyfree		21	/* MADV_FREE potential throwaway */
 
 /* PG_owner_priv_1 users should have descriptive aliases */
 #define PG_checked		PG_owner_priv_1 /* Used by some filesystems */

-
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